<!-- BEGIN COPY / PASTE -->
    // Example of using GitHub Copilot to generate a test case for a REST API endpoint
    const request = require('supertest');
    const app = require('../app'); // your Express app

    describe('GET /api/items', () => {
      it('should return a list of items', async () => {
        const response = await request(app).get('/api/items');
        expect(response.statusCode).toBe(200);
        expect(response.body).toBeInstanceOf(Array);
      });
    });
    <!-- END COPY / PASTE -->